/Engine/Source/Runtime/Core/Public/Delegates/DelegateSignatureImpl.inl
Static: Creates a weak shared pointer C++ lambda delegate technically this works for any functor types, but lambdas are the primary use case
template<typename UserClass, ESPMode Mode, typename FunctorType, typename... VarTypes> static TDelegate< RetValType(ParamTypes...), UserPolicy > CreateSPLambda &40; const TSharedRef< UserClass, Mode > & InUserObjectRef, FunctorType && InFunctor, VarTypes &&... Vars &41;